The Town of Niagara, New York, is hereby divided into 12 classes or districts, termed and hereinafter referred to as:

Continuation. All districts now designated as R or Residential, LI or Light Industrial, HI or Heavy Industrial and B or Business are continued in effect; the regulations provided in this code shall apply to all such uses.

Interpretation of boundaries. Where district boundaries are indicated as approximately following the center lines of streets or highways, street lines, or highway right-of-way lines, such center lines, street lines or highway right-of-way lines shall be construed to be such boundaries.

Except as herein provided, no building or land shall hereafter be used or occupied and no building or part thereof shall be erected, moved or altered unless in conformity with the uses listed as permitted uses in each zone by this code and in conformity with the requirements set forth in Appendix A; [1]nor shall any open space contiguous to any building be encroached upon or reduced in any manner, except in conformity with the area and bulk requirements, off-street parking requirements and all other regulations set forth in Appendix A.

Requirements contained herein which apply to designations not shown on the existing map shall apply in the event of amendments to the Zoning Map consistent with the Master Plan, for those districts not now contained on the Zoning Map.

Where the boundary of a district follows a railroad line, such boundary shall be deemed to be located in the middle of the main tracks of said railroad line.